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Glaukos Corp. (GKOS) Dropped Following Downgrade

Stifel downgraded its rating on shares of Glaukos Corp. (GKOS) Friday morning to "Hold" from "Buy."

Glaukos gapped open sharply lower Friday, but traded in a range for the bulk of the session. The stock closed down by 3.05 at $27.62 with volume at a 7-month high. Glaukos dropped to nearly a 3-month low.

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